Science & Technology UPSC PYQ 2018

In which of the following areas can GPS technology be used?1. Mobile phone operations2. Banking operations3. Controlling the power gridsSelect the correct answer using the code given below:

When the alarm of your smartphone rings in the morning, you wake up and tap it to stop the alarm on which your geyser to be switched on automatically. The smart mirror in your bathroom shows the day's weather and also indicates the level of water in your overhead tank. After you take some groceries from your refrigerator for making breakfast, it recognizes the shortage of stock in it and places an order for the supply of fresh grocery items. When you step out of your house and lock the door, all lights, fans, geysers and AC machines get switched off automatically. On your way to office, your car warns you about traffic congestion ahead and suggests an alternative route, and if you are late for a meeting, it sends a message to your office accordingly. In the context of emerging communication technologies, which one of the following terms best applies to the above scenario?